/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntityManager.h
Copy any and all the specified component types from one entity onto another. Missing components on the source entity are handled gracefully.
void CopyComponents ( [FMovieSceneEntityID](API\Runtime\MovieScene\EntitySystem\FMovieSceneEntityID) SrcEntityID, [FMovieSceneEntityID](API\Runtime\MovieScene\EntitySystem\FMovieSceneEntityID) DstEntityID, const [FComponentMask](API\Runtime\MovieScene\EntitySystem\FComponentMask) & ComponentsToCopy )